L-shaped caliper for limb length measurement during total hip arthroplasty

DOI Web Site 被引用文献4件
  • K. Shiramizu
    Department of Orthopaedic Surgery, Fukuoka University School of Medicine, 7-45-1 Nanakuma Johnan-ku, Fukuoka 814-0180, Japan.
  • M. Naito
    Department of Orthopaedic Surgery, Fukuoka University School of Medicine, 7-45-1 Nanakuma Johnan-ku, Fukuoka 814-0180, Japan.
  • T. Shitama
    Department of Orthopaedic Surgery, Fukuoka University School of Medicine, 7-45-1 Nanakuma Johnan-ku, Fukuoka 814-0180, Japan.
  • Y. Nakamura
    Department of Orthopaedic Surgery, Fukuoka University School of Medicine, 7-45-1 Nanakuma Johnan-ku, Fukuoka 814-0180, Japan.
  • H. Shitama
    Department of Orthopaedic Surgery, Fukuoka University School of Medicine, 7-45-1 Nanakuma Johnan-ku, Fukuoka 814-0180, Japan.

抄録

<jats:p> The existing methods of assessing limb lengthening during total hip arthroplasty (THA) are prone to error because the measurements are not parallel to the limb lengthening axis. In order to address this, we designed a caliper to estimate limb lengthening during THA and evaluated its accuracy compared with our previous device, the straight caliper. Limb lengths were measured in 100 patients. The L-shaped caliper was used in 50 cases and the straight caliper in 50. The correlation between intra-operative and post-operative radiographic measurements was significantly improved using the L-shaped device (p < 0.0001, r = 0.934). This method was extremely accurate in predicting changes in limb length due to surgery. </jats:p>

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